I have an ASUS 1015E-DS02 laptop running OpenSuse 42.1 (leap), and it has
started rebooting regularly.  Often there is nothing in the log, but after a
recent reboot I had:

h_crtc_commit [i915]] *ERROR* Atomic update failure on pipe A (start=1181
end=11
82)

followed by boot messages.

This appears to be the same bug as
http://lists.freedesktop.org/archives/intel-gfx/2015-August/074113.html
https://bugs.freedesktop.org/show_bug.cgi?id=91579

The last of those seems to imply this is drm_intel.  Currently I have v
2.4.65-1.1 installed from openSUSE-leap/42.1-Oss

Maybe a newer version needs to be supplied?  It seems to be fixed somewhere,
according to the last link above (I don't really understand).